Open Knowledge

Water Quality 75% open

Korea, Republic of

What data is expected?

Data, measured at the water source, on the quality of water is essential for both the delivery of services and the prevention of diseases. In order to satisfy the minimum requirements for this category, data should be available on level of the following chemicals by water source and be updated at least weekly:

  • fecal coliform
  • arsenic
  • fluoride levels
  • nitrates
  • TDS (Total dissolved solids)

What data is available

  •   Openly licensed? Yes(Here)
  •   Is the data available for free? Yes
  •   Is the data machine readable? No (n/a)
  •   Available in bulk? Yes
  •   Is the data provided on a timely and up to date basis? No
  •   Publicly available? Yes(as Tapwater Quality published by National Waterworks Information Network)
  •   Is data in digital form? Yes
  •   Is the data available online? Yes (Here)
  •   Does the data exist? Yes


There is no data which meets the minimum criteria in Korea, Republic of. Data about the required chemicals is only available for filtration plants, and this dataset is updated monthly. The data for filtration plants is available on the site called National Waterworks Information System (NWIS) managed by the Ministry of Environment. Data about TDS (Total Dissolved Solids) is not available for filtration plants or water sources. Only data about TS (Total Solids) is available for filtration plants. Data for filtration plants is accessible via Web APIs after the registration.

Available data about water sources in Korea is on the level of the following:

  • water temperature
  • pH
  • DO (Dissolved Oxygen)
  • EC (Electric Conductivity)
  • TOC (Total Organic Carbon)
  • TN (Total Nitrogen)
  • TP (Total Phosphorus)

The data is collected by the National Auto Water Quality Monitoring Network, and it is available at under the KOGL Type 1, which is an open license. This dataset is also accessible via Web APIs after the registration.

Reviewer comments

Some confusion with the submitting regarding what we were looking for. However, after clarifying found the data. Korea has really good data.



  • Nisha Thompson


  • James G. Boram Kim